Web App Engineer (Global Team)

We are seeking passionate and driven international engineers to join our Tokyo-based global product team. Sansan is Japan’s leading business card-based contact management solution for corporations, and one of Japan’s leading SaaS products. Having 80% market share in Japan, we are now setting our sights on global expansion, starting with South East Asia. To this end we have set up a multinational global team within the product development division. The global team is working on features and fixes specifically related to the effective localisation of the English language product. We seek motivated software engineers to help us in this endeavor; by improving the product and its features, integrating and scaling it to different countries, and understanding and prioritising user experience and needs.

Japanese ability is not strictly required, but at least conversational ability is preferred.

Residence in Tokyo is required for the role, but applications from abroad are welcome. We will fully support successful applicants’ relocation to Tokyo.

You’ll be working in our head office, which is in a great location in the trendy and upmarket Omotesando area of Tokyo.

Development Environment

  • C#.NET
  • HTML/CSS/jQuery
  • Swift (iOS)
  • Kotlin (Android)
  • PostgreSQL
  • Amazon Web Service
  • Redis

Required Languages

  • Native or fluent written and spoken English
  • At least basic Japanese ability is preferred but not required

Required Skills

  • At least 3 years experience with web development (preferably using C#.NET Framework, MVC, HTML/CSS/jQuery, RDBMS (PostgreSQL))
  • Able to design domain models, database schemas and system architecture (experience with AWS is also welcome)
  • Able to write clean, maintainable and tested code
  • Experience in teams, doing code-reviews, git-flow, and releasing your own code
  • A confident and forward-looking understanding of user expectations and needs
  • A positive and motivated attitude

Employment Details

Employment Type

Full-time (正社員)

Annual Salary

¥5,000,000 – ¥9,000,000


Sansan Head Office Aoyama Oval Building, 5-52-2 Jingumae, Shibuya-ku, Tokyo


9:30am – 6pm




Twice annually (January & July)

  • Japanese national health insurance
  • Transportation costs
  • 6 month probation period, with full pay and benefits
  • Salary includes 45 hours overtime pay (irrespective of whether any overtime is worked)
  • Any overtime beyond this will be paid additionally (though is discouraged)
Employee Empowerment

Here are some examples of the benefits which full-time employees can receive.
N.B. Most have monthly/annual limits per employee.

• Know Me

Company subsidized eating/drinking out for colleagues in different teams.

• Geek Seek

Company pays for work-related books, hardware and software you request.
*Only for engineering, R&D, and creative positions.

• Ocean

Company subsidized language lessons.

• H2O

Company subsidizes rent for employees living within 2 train stops of Omotesando or Shibuya stations.

• Yay

Working from home permitted up to 4 days per month.

• Donicho

Weekdays can be taken off in exchange for working on weekends/holidays.


Various benefits for new mothers, such as nursery fee subsidies.


Subsidies for parents of young children, covering babysitting and housekeeping fees.

• Charge Leave

3 consecutive paid days off between July & October (not deduced from paid holiday allowance).

  • Weekends & national holidays
  • Annual paid holiday
  • New year holiday

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